Rolling mill



'Jan. 11 1927.

J. R. coE

ROLLING MILL I Filed y 8. 1925 5 Sheets-Sheet 1 vwe'utoz QMW Filed July 8, 1-92 5 3 Sheets-Sheet 2 Jan. 11, 1927. 1,614,422

J. R. COE 4 ROLLING MILL Filed July 8, 1925 5 Sheets-Sheet 5 anoenbpv I attoznugs Patented Jan. 11, 1927.

UNITED STATES PATENT OFFICE;

JAMES R. ODE, OF WATERBURY, CONNECTICUT, ASSIGNOR TO THE AMERICAN BRASS COMPANY, OF WATEBBURY, CONNECTICUT, A CORPORATION OF CONNECTICUT.

ROLLING MILL.

This invention relates to rolling mills, and

I has for an object to provideimproved means to obtain the necessary stiffness with the use of rolls of comparatively small diameter.

Itv is also an object of the invention to so mount the working rolls and the stiffening and supporting means therefor that one of the rolls and its stifi'ening'means maybe adjusted as a whole or as a unit relative to the other working roll to secure the required relative adjustment between the rolls.

It is a further object of-the invention to S9 construct the mounting and stiffening means for the working rolls that they may be mounted in the standard housings used in this type of'device, and therefore, rolls provided with my improved stiffening and supporting means may be substituted for larger constructing the housings.

IVith the foregoing and other objects in view, I'have devised the construction illustrated in the accompanying drawings and which in its preferred construction, comprises a pair of working rolls each of which is backed and supported by a pair of backing and supporting rolls reduced in diameter at spaced points to provide an interrupted surface to engage the working rolls. The

rolls mounted in the housings without re-- reduced portions are mounted in and sup ported by journal blocks forming bearings for. these reduced portions of the backing rolls, which journal or bearing blocks are mounted in lieaivy castings so designed as to be mounted in the rolling mill frames or housings. These elements are so constructed and arranged that oneunit consists of one of these castings, two backing'rolls and one working roll, and-one of these units is so mounted that it is adjustable as a whole relative to the other unit in a vertical plane,

this adjustment being secured by the usual means of lifting rods actuated. by levers and counter weights or springs in conjunction- }with the usual adjusting screws- Referring to the accompanying drawings, Fig. 1 is a side elevation of a rolling mill comprising my improved construction.

Fig. 2 is a transverse vertical section through the same substantially on line 22 of Fig. 1, but drawn to a'larger scale.

Fig. 3 is an end elevation of the mill looking from the right of Fig. 1, and

1925. Serial No. 42,183.

Fig. 4 is a detail view showing one of the To overcome these objections mills have been made with working rolls of relatively smalldiameter in order to secure a larger angle at the rolling point between the rolls and give the required reduction, and these rolls have been backed or supported by means of separate idling rolls to prevent excessive springing of the working rolls and to give the required strength, but as these backing rolls are supported in substantially the same way as the working rolls they must beof a large diameter to give the required strength and stiffness, and they require specially designed housings or frames.

I have found that by providing the backing rolls with separate bearings intermediate their lengths and mounting these bearings in a heavy casting to give the required strength and stiffness I can use relatively small working rolls and also relatively small backin rolls, and that Ican mount these rolls and the supporting castings 1n the ordinary standard hbusings orframes.

In the accompanying drawings I have cured in adjusted position by any suitable means. Mounted in these housings is a pair of'heavycastings 12 and 13 which extend longitudinally between the two housings. In the present construction the lower casting is seated at its opposite ends in the housings and rests on the lower wall 14 of the opening 15 of the housings, while the upper casting 12 is guided at its opposite ends for vertical movement 1n these openings, the

side walls of the openings forming guides for the casting to maintain it in proper position. These castings are of similar construction and are strengthened to give them the required vertical stiffness by the ribs 16,

and they are also provided with lateral ribs 17 togive them the required lateral stiffness. These castings are recessed on their 0 posed sides to receive bearing blocks 18 or the backing or supporting rolls 19, there being in the present construction two backing rolls for each working roll, as shown in Fig. 2, two above the upper roll 12 and two below the lower roll 13. These backing rolls are reduced in diameter at suitable spaced points intermediate their lengths, as shown at 20, to provide bearingsrunning in the bearing blocks 18 and also to provide an interrupted surface to the rolls which gives a pluralit of spaced surfaces 21 to engage the sur aces of the working rolls '33. By reducing the diameters of the backing rolls at the portions 20 the bearings are removed from the surface which engages the Working rolls, and therefore, the oil and grease which is required on these hearings is not carried to the surface of the working and these blocks are also I constructe rolls where they would be transferred to the metal being'rolled. This arrangement, therefore, not only provides supporting bearings at suitably spaced distances throughout the length of the backing rolls, but these hearings are secured without contaminating the surfaces of the rolls with grease. It will further be apparent that with this arrangement the backing rolls may be made of relatively small diameter as the strains are taken up by the heavy cast-- ings 12 and 13, which castings 've the backing rolls, and through the bac ing rolls the working rolls, the required stiffness. Thus the working rolls ma be given any diameter which is the most suitable for the particular work to be performed having in mind'the desired angle between the rolls at the rolling space. Y

It is also preferred to provide caps 22 on the opposite sides of the rolls from the hearing blocks 18 in the reduced portions of the backing rolls, these caps being secured to the castings 12 and 13. by any suitable means such as the screws 23, these caps helping to retain the backing rolls in the castin s. Bearing blocks 24 and 25 are provided or the reduced necks 26 of the working rolls, guided in the open. ings 15 in the housings.

The sup orts for the various rolls are so (i and arranged that each working roll, its backing rolls and the supporting, casting therefor comprise a separate unit, andone of these units, the upper one in the present instance, is mounted so that it is adj ustable as a whole'relative to the lower unit to give the required adjustments between the two working rolls for rolling variousthicknesses of metal'and so forth. I To accomplish this, in the present construction, the upper bearing blocks 24 are supported by the rods 27 which extend upwardly from .below the housing where they are supported by the usual lever and counterweights or heavy springs 28. These springs are mounted on a support 29 carried on the underside of the housing by the bolts 30 and hear at their upper ends against collars 31 secured to the rods 27 and thus tend to lift these rods. These rods carry suitable nuts'32 which engage the lower sides of the blocks 24 and thus tend to lift the upper working roll 33, the two backing rolls 19 therefor and the supporting casting 12 as a unit. The upward movement of this unitis controlled by the usual adjusting screws 34 mounted in the tops of the housings and engaging the castings 12. It will thus be apparent that the springs 29 acting through the rods 27 maintain the upper working roll, the backing rolls, and the supporting casting therefor always in the same relative positions, and that these elements by the coaction of the adjusting screw with these rods and springs allow ad ustment of this unit as a whole and without changing in any way the relative positionsof the elements of the unit, and further that this unit may be adjusted in a vertical plane relative to the lower working roll. The lower blocks 25 are provided to form upper bearings for the necks of the lower workin roll through which the rods 27 extend. l olts 35 extend through and between the two bearings and carry springs 36 re-' acting at their opposite ends against these two bearings and tend to separate the same and hold the lower working roll in proper position on its two backing rolls.

The rolls "are driven fr m any suitable source of power, not shown. As shown in Fig. 1v the squared ends 37 of the working rolls are connected by suitable couplings 3b tothe blocks 39 driven by any suitable means from the source of power. -At their opposite ends the two 1 working rolls have driving connection through the gears 40. The back, ing rolls for the respective-working rolls are dr1ven from the gears 40, but as the two backing rolls for each working roll must be driven in the same direction one of the backing rolls is driven by a gear 41 meshin with one-half of its driving gear 40 whi e the other backing roll is driven by a gear 42 meshing with the other half of the gear 40.

It Wlll be apparent from the foregoing that with the construction and arrangement describedl can use working rolls of relatively small diameter and can secure the mess sary'stifl'ness with the use of backing rolls of comparatively small diameter. ,Thus the use of excessively large rolls is not required. Furthermore by mounting the cluster or group of-rolls in one big casting they can be adjusted as a whole, and the various elements are held in proper relation with each other with a minimum use of jointed parts. By this construction change in the relative positions of the various elements under stress. is reduced to a minimum.

Having thus set forth the nature of my invention, what I claim is:

1. Ina rolling mill, a working rol1,a backing roll extending longitudinally of the working roll, said backln roll being reduced in diameter at space points throughout its length to provide spaced bearing surfaces to engage the working roll and support it throughout substantially its entire length,v supportin hearings for the reduced portions of the bac ing roll, and a rigid support for the bearings. v

2. In a rolling mill, a pair of working 1'olls,.a pair Ofbacking rolls for each working roll extending longitudinally thereof, said backing rolls being reduced in diameter at spaced points throughout their lengths to provide spaced bearing surfaces to engage the working rolls, supporting blocks for the backing rolls having bearings for the reduced portions of the rolls, and supports for the blocks.

3. In a rolling mill, a pair of spaced housings, a working roll between the housings, a pair of laterally spaced backing rolls extending longitudinally of the working roll, each backing roll being reduced in diameter 1 at spaced points throughout its length toprovide spaced bearing surfaces to engage the working roll and support it throughout substantially its entire length, supporting bearings for the reduced portions of said backing rolls, anda rigid support for said bearings extending between the housings and supported thereby.

' 4. In a rollin mill, a working roll, abacking roll for t e working roll extending longitudinally thereof and reduced in diameter' at spaced points throughout its length to provide spaced bearing surfaces to engage to support the same, and

the working roll, supporting blocks for the backing roll having bearings for the reduced portions -of said roll, and a support for the said blocks. I

5. In a rollin mill, a working roll, aback: ingroll for t e working. roll reduced in diameter. at a plurality of spaced points in termediate its length'to give an interrupted surfaceto engage the workin roll, bearin s for the reduced portions of t e backing ro a support forthe bearings. 1

6. In a rolling mill, a working roll, a pair of backing rolls for'the working roll, each backing roll being reduced'in diameter at a plurality of spaced points intermediate itslength togive interrupted surfaces to engage the working roll, bearings for the re duced portions of the backing rolls to support the same, and a support for the. bear In a rolling mill, a working roll, a back-.

ing roll having a plurality of spaced bearing surfaces to engage-and support the working roll throughout substantially the length thereof, supporting bearings for the back ing roll engaging the same hetweensaid bearing surfaces, and supporting means for said bearings.

A 8. In a rolling mill, a working roll, a pair of backingrolls each having a plurality of spaced bearing surfaces to engage and support the working roll throughout substantially its entire length, a support, and bean .ings engaging the backing rolls between the said bearing surfaces to support said rolls and mounted in the support.

9. In a rolling mill, a working roll, a'pair of backing rolls for the working roll, each backing roll being reduced in diameter at a plurality of spaced points intermediate its length to give interrupted surfaces to engage the working roll, bearings for the reduced portions .of the ibacking 'rolls to support the same, a support for the bearings, and means for adjusting the rolls'and the support vertically as a unit.

1 In arolling mill, a pair of spaced housings, a workin rollbetween the housings, a pair of backing rolls for the working roll each' having a plurality of spaced bearing surfaces to engage the surface of the working roll to support said roll throughout substantially its entire length, a support mounted in and extending between the housings, and bearings for supporting the backing rolls engaging said rolls between the said bearing surfaces and mounted in the support,

11. In a rolling mill, a pair of superposed working rolls, a pair of backing rolls for each working roll, said backingrolls being each reduced in diameter intermediateits length giving an interrupted surface to en-' gage the working rolls, bearing blocks hav ing bearings for the reduced portions, supports for the blocks and means for adjusting oneof the working rolls, its backing 7 the openings therein so that it is supported bythe housings.

housings, a pair 0 ings as a. unit re 13. In a rolling mill, a pair of spaced housings, a working roll mounted in the housings, a backing roll for the working roll extending longitudinally thereof andreduced in diameter at a plurality of spaced points intermediate its length giving an interrupted surface to engage the workingroll,

throughout substantially its entire length, bearings for the reduced portions of the roll, and a support for the bearings mounted in the housings.

14. In a rollin mill, 2. pair of spaced 5 working rolls mounted in said housings, a pair of backing rolls for each working roll extending longitudinally thereof, said backing rolls being reduced in diameter at spaced points intermediate their lengths to give an interrupted surface to engage the working rolls throughout substantially their entire lengths, bearings for said reduced portions, supports for the bearings mounted in the housings, and means for ad justing one of the working rolls, its backing rolls and the su porttherefor in the housiative to the other working roll. v 15. In a rolling mill, a pair of spaced housings having transverse openings therein, a'working roll between the housings, apair of laterally spaced backing rolls for the" 30- working roll extending longitudinally thereof, each backing roll having a plurality of spaced bearing surfaces to engage and support the working roll throughout substantially its entire length, supporting bearings ,r

reduced in diameter at points intermediate its length to form a plurality of spaced bearings and provide a plurality of spaced bearing surfaces to engage the working, roll,

supporting bearings for the bearings on the Lacking roll, and a rigid support for saidsupporting bearings extending between the housings and projecting at its ends into said openings so as to be supported by the housm s,

In testimony whereof I aflix my signature;

JAMES R. COE. 

